Reinforcing structure for concrete



W. GOLDIE.

REINFORCING STRUCTURE FOR CONCRETE.

APPLICATIQN HLED JULY 10,1918.

1,344,882. Patented June 29, 1920.

INVENTORI' UNITED STATES WILLIAM. GOLDIE, 0F WILKINSBURG, PENNSYLVANIA.

REINFORCING STRUCTURE FOR CONCRETE.

Specification of Letters Patent.

Patented June 29, 1920.

Application filed July 10, 1918. Serial No. 244,239.

To all whom it may camera:

Be it known that I, VVILLIAM GoLDIE, a citizen of the United States, and resident of Vilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Reinforcing Structures for Concrete; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to reinforcin structures for concrete, and is particularly concerned with a structure of this character in which intermediate reinforcing bars may be easily inserted between the main stringers of the structure to provide a reinforcing of the intermediate spaces and to properly distribute the reinforcing throughout the concrete.

The invention is applicable to all characters of reinforcing structures, ship construction, building construction, 'fioor construction, etc.

The invention contemplates the employment of longitudinal stringers having dovetailed seats in their side walls and cross bars having dove-tailed end portions fitting in said dove-tailed seats. It also contemplates other improvements as hereafter described.

In the accompanying drawings, Figure l is a transverse sectionthrough the stringers and intermediate supporting members; Fig.

2 is a transverse section on the line 2-+2f Fig. 1; Fig. 3 is a perspective view of the notched supporting member with one of the intermediatestringers seated therein; Figs 4:. 5 and G are detail views illustrating the manner in which the supporting members, when used as cross members: are connected to the main stringers. 7

My invention is illustrated in connection with the employment of main stringer members embodying the subject matter of application for patent filed by me Dec. 15, 1917, Serial No. 307,251, but it is, of course, to be understood that the invention can be employed with any suitable reinforcing materials. However, it will be described in connection with the said special form of reinforcing bar.

The main stringers 1 are formed of rolled sections of I-bar form with dovetailed seats on each side of the center web 2, said dovetailed seats being formed by inwardly sloping flanged portions 8, so providing the dovetailed seats 4. Extending between these stringers 1 are the supporting bars 5, which are connected to the main stringers, as hereinafter described. Thesesupporting bars may be of any desired shape or are preferably formed of substantially T-shape, having horizontal portions 6, rising from which are the vertical rib portions 7, in which vertical rib portions are formed notches or seats 8 to receive the reinforcing bars 9, said reinforcing bars being of any suitable section, and being illustrated as of the same general section as the main stringers 1. The notches 8 in the ribs 7 are preferably formed of such width as to provide a substantially neat fit to the reinforcing bars 9, which bars are seated in the same from above, as illustrated. The bars of'any suitable section may, of course, be employed, and the I-shaped bars illustrated have the flanges 10 bearing against the side walls of the notches or seats 8, and substantially filling the seats, so that the cutting of the notches in the vertical web portions does not substantially weaken the supporting bars. However, the horizontal portions 6 are preferably made of sufficient thickness to give all the necessary strength required for any such cross bar construction, and if desired, they may be further braced by a central reinforcing rib 11, extending centrally along-the lower face of the bar, as shown in Figs. at and 5.

Asso constructed, after the erection of the main reinforcing structure, such as that composed of the stringers 1 and the cross bars 5, the intermediate reinforcing bars can be very quickly and easily placed in position by the passing of the reinforcing bars 9 along and above the supporting bars 5 and dropping them down into the said notches in said bars, as illustrated. This requires practically no work except the possible driving of the bars down into the seats, and if it is desiredso to do, driving over the lips 12 of the rib portions 7 of the supporting bars, so asto confinethe reinforcing bars 9 in their seats during the assembling of the reinforcing material and before the pouring of the concrete around the same. This can be accomplished by a hammer blow upon a metal punch engaging the top edge of the central rib of the supporting bar and driving it over the reinforcing bar and so looking the same in the seat.

In assembling structures of this character, it is desirable that easy means for the insertion of the cross bars in the stringers be provided, and the invention illustrates an efficient means to this end, where such notched bars are employed as cross bars between the stringers of the particular type illustrated. The cross bar is rolled to finished shape preferably in T-bar form, as above illustrated, and as the stringers 1 have the dovetailed seats 4: on their sides, it is very desirable to have a quickand efficient means for making a firm connection between the stringers and the cross bars. Using such Tebar shapes or other similar shapes having vertical ribs, the horizontal heads 6 of the bars are cut away as illustrated at 15, leaving the vertical ribs extending out beyond the same. These ribs are sheared to form dovetailed end portions 16, and are also provided with central slots 17 extending in from the ends of the bars, as illustrated. The dove-tailed end portions correspond substantially to the dovetail portions'& of the stringers, though possibly having a somewhat greater spread, as illustrated by the dotted lines 18 in Fig. 6. The supporting bars are cut to accurate length for the spaces between the stringers and to insert them in place the supporting bars, while in inclined position, are placed with their end portions entering the dovetail recesses of the stringers, as illustrated in Fig. 4E. The placing of the bars in such inclined position enables the dovetailed end portion 16 of the supporting bar to enter these recesses, and when the cross bars are properly located with relation to the stringers, by means of a wrench or other suitable tool, the cross bars are turned up into vertical position, as shown in Fig. 5, the center end slots 17 permitting the springing together of the tongues 19 forming the dovetail end portions of the cross-bars and the spring of these tongues holding the supporting bars firmly in place and connected to the stringers. If necessary, wedges 20 may be driven into the slots 17 to positively lock the cross-bars and stringers together. Thus the cross-bars can be easily and quickly secured at any desired point to the stringers, and they form spacers between the same, holding the stringers in position, and where intermediate reinforcing bars, such as the bars 9, are employed, these bars can be -quickly secured in place in the supporting bars, as above described.

I am thus enabled to provide for the rapid assembling of reinforcing structures of this general type, it being only necessary to properly connect the supporting bars to the other parts of the framework, such, for example, by means illustrated, where the cross-bars are connected to the stringers, and to carry the intermediate reinforcing bars along above the supporting bars, drop them into seats provided for them, and if necessary, lock them therein bythe upsetting of the top corners of these seats, as above fully described.

What I claim is:

1. In a concrete reinforcing structure, the combination of longitudinal stringers having dovetailed seats extending continuously along their side walls and cross bars having normally dovetailed end portions fitting in said dovetailed seats.

2. In a concrete reinforcing structure, the combination with longitudinal stringers having dovetailed grooves extending continuously along their side walls and crossbars extending between the stringers and having dovetailed end portions, said dovetailed end portions being of such a width in one direction that they are adapted to be inserted in the dovetailed grooves of the stringers when in inclined position, and of such a width in another direction that they may be turned into vertical position to secure them within the stringers.

3. In concrete reinforcing structures, the combination of stringers having continuous dovetailed grooves in their side walls and connecting bars having yielding dovetailed end portions whereby they may be locked within said grooves.

4. In a concrete reinforcing structure, the combination of stringers having continuous dovetailed grooves in their side walls, connecting bars extending between the stringer, and having dovetailed end portions provided with intermediate slots extending from the ends inwardly, so as to form yielding dovetailed end portions.

5. In a concrete reinforcing structure, the combination of stringers having continuous dove-tailed grooves along their side walls, connecting bars extending between the stringers, and having dove-tailed end portions provided with intermediate slots extending from the ends inwardly so as to form yielding dovetailed end portions, and wedgesinserted in said slots.

In testimony whereof, I, the said IVILLIAM GoLDIn, have hereunto set my hand.

7 WILLIAM GOLDIE.

Witnesses:

JOHN F. WILL, J. R. KELLER. 

